I hear the government is feeling pretty cocky about its burgeoning investigation. The new probe has already resulted in a slew of recent arrests... and the closing of one large hedge fund... not to mention the indictment last week of Rujat Gupta, accused of passing tips to Raj Rajaratnam while a director of Goldman Sachs.

"The prosecutors think this insider-trading case is like shooting fish in the barrel," a prominent attorney who deals with the Justice Department recently told me.

Gasparino also mentions that one crew that might not be feeling as cocky as the FBI, is the one over in Connecticut in the SAC Capital offices. Because of the FBI's sweeping investigation, Steve Cohen is apparently "considering banning business activities over private email accounts and private cellphones."